Boring-machine.



No. 639,604. Patented Dec. I9, |899.

C. NIELSON.

BORING MACHINE.

(Application filed Aug. 6, 1898.\

3 Sheets-Sheet `(N0 Model.)

www'.

351g n l lt/M3811@ No. 639.604. y Patented Dec.l I9, i899. C. NIELSON.

BORING MACHINE.

(Application led Aug. 6, 1898.) (N0 Model.) l' 3 Sheets-Sheet 2` TH:Nonms Pneus p9.. Png?!@Lm-m.4 wAsHlNnTnN. n, c.

No. 639,604. PatentedDec. I9, |899.

C. NIELSON.

BGRING MACHINE.

(Application med Aug. e, 1898.

(No Model.)

3 Sheets-Sheet 3.

@LW/anwaey Suva/whom' j Nrrnn STATES CHRISTEN NIELSON, OF NEV YORK, N.Y.

BoulNclvlAcl-HNE.

SPECIFICATION forming part of Letters Patent No. 639,604, atea December19, 189e.

Application tiled August 6, 1898.

To tZZ whom t may concern:

Be it known that I, CHRISTEN NInLsoN, a resident of New York, (Brooklym)county of Kings, and State of New York, have invented certain new anduseful Improvements in Boring-Machines, of which the following is afull, clear, and exact specification, reference being had to theaccompanying drawings, wherein Figure l is a plan and Fig. 2 a sectionalview of a drilling-vise and gage combined made according to myinvention. Fig. 3 is a plan view of such adjustable drilling-vise andgage combined; Fig. 4, a sectional view on line 4 4, indicated in Fig.3. Fig. 5 is a front and Fig. 6 a side elevation of a vertical drillprovided with my combined adjustable vise and gage. Fig. 7 is asectional view of the automatic stopping device used in connection withmy combined drilling-'vise and gage.

My invention relates to boring-machines5 and it consists of the'herein-described combined vise and gage devised for boring of frame ofroller bearings for fifth-wheels and for similar work of this characterwherein it is required that the borings be made exactly in the line ofthe diameter and either equidistantly from each other or in pointsmarking equal or proportionate fractions of the circles.rxntifriction-rollers used in the construction of roller-bearings forfth-wheels are mounted between two concentric circular rails on spindleswhich must be exactly in the radial line of the rails in order to avoidstrain and friction, which is detrimental to the working of the bearing.They must also be apportioned equidistantly from each other. Heretoforethe boring of such rails was done separately for each rail, the holeshaving been previously marked thereon. The process is slow and tediousand the result of such work not satisfactory. The spindles of therollers must it tightly into the holes. They must be exactly in theradial line; otherwise the rollers would not revolve and the bearingswould not work. If theholes deviate from the exact radial line, theholes must be filed, and then, aside from the greater amount of laborinvolved, the bearings do not work satisfactorily and are speedily wornout, because the spindles do not sit firmly in such irregular holes, andconsequently the rollers mount- Serial No. 687,954. (No model.)

ed thereon joggleand twist themselves in the channels of thebearing-plates.

My invention also obviates the otherwise prerequisite dividing andmarking of the rails, and renders it possible to bore both rails at thesame time in an exactly radial line. My combined vise and gage rendersit also possible to bore a number of such holes simultaneously throughboth rails and of exact size as required for the spindles of therollers, thus obviating all necessity of subsequent adjusting the holesby reaming or filing.

My non-adjustable vise and gage consists of a segmental block A,provided with a number of concentric grooves a a, b b', c c', the.,arranged in pairs varying in depth, width, and the intervening distancebetween each two composing a pair, series of bores l 2 3, duc., theremovable automatic stopping device B, and of means for aftixing theblock to the platform of a drill. Grooves CZ cd, Z1', c c', the.,represent parts of circles corresponding to the diameters of the rails,and the bores 1 2 3, the., follow radial lines of the circles. Thewidths of grooves a a', b o', rbc., correspond tothe thickness of therails, and the sizes of bores l 2 3, the., are in all series the same asare also the sizes of the spindles to be set in the rails and thedistances between the bores of each series are equal, representing equaldivisional parts of the circumference of the outside circle of eachcorresponding pair of rails. The distances between the bores vary ineach series, being dependent upon the number of rollers required for thevarious sizes. The divisions of all series are started from the com monradial line x no, in which the bores of all series (and sizes) coincide.All bores are arranged on the same level; but the depths of the groovesa a, h b', c c', dto., vary correspondingly to the width of the railsfor each size of bearings.

Screw-threaded holes z serve for removably aflixing to block A theautomatic stopping device B in position corresponding to the division ofthe size of rails being bored. The stopping device consists of bow j,pin t', collar k, spiral spring m, fork n, and lever Z, fulcrumedtherein. Pin i is snugly fitted into bores l 2 3, &c., and sufficientlylong to IOO reach from the apex of bow beyond the outer groove ct of thelast pair in the block. The pin is inserted in a bore provided in theapex of bow l7' and is provided with a number of transverse holes p',adapted to receive pin 19, which holes are as far apart as the severalpairs of grooves ci cd, ZJ b', c c', &c., are arranged in the block.Inside of the bowj and between its apex and adjustable collar 7:; springm is slid on the pin t', driving the pin inwardly. The stem of fork a isalso snugly iitted in the bores l 2 3, dre., and thus the fork mayreadily be set in the bore nearest to that in which pin t' is insertedand its position as readily changed as that of the pin. Lever lispivoted between the tines of the fork n, and its shorter forward arm isjoined by links 0 to pin p, and thereby to pin By pressing upon theother end of lever Z, which is made in the shape of a handle, the pin isdrawn outward against the action of the spring m.

The combined vise and gage can also be made adjustable for boring railsof various diameters and of varying thickness. The adjustable combinedvise and gage shown in Figs. 3 and 4 consists of the base-plate D,provided with integral flanges D and D2 and with radial slots E, havingtheir lower edges beveled to receive the heads of screws a, by means ofwhich segmental strips t' and o are secured to the base-plate. Strips oare rectangular in crosssection, whereas strips `u are partly recessed,so as to form a groove when joined to strips fu. The width and depth ofthis recess corresponds to the width and thickness of the rails, andthus the width and depth of the grooves formed by joining strips o' tostrips u may be varied. Flange D and also strips o and l'u' are providedwith bores l 2 3, che., the flange with bores of all divisions, whereasstrips o and t" are provided only with the bores corresponding to thedivisions of the rails for which they are designated. Strips u and t"areexchangeable, and thus permit adjustment of the combined vise andgage not only for rails of varying diameters, but also for varyingwidths between the rails.

The functions of the implement will be most readily understood from thefollowing explanation of its use: BlockA is secured to the platform of adrill-for instance, a vertical drill-in the manner shown in Figs. 5 and6 by bolts q and in such position that line @c :r and the plane oi'bores l 2.3, die., are in alinelnent with the axis of the drill-spindle.The set or pair of rails to be drilled (t and t) are then inserted inthe corresponding pair of grooves a a', b b, or c c', dsc., and thensecured together `by clamps s, s, and s2. Then the drill is started, thedrilling-tool entering the bore in line with line a; .fr and is drivensuccessively through both the cuter and the inner rail. Stopping deviceB is then set on the edge of block A in line with the next followingbore of the corresponding division, preferably to the left of thedrillspindle, and pin 'i is adjusted to enter the bore sufficiently deepso as to cross the groove in which the outer rail t of the pair isinserted. rail will bar the pin t from crossing the groove; but afterthe first hole is drilled pin 'L' will slip into it when the rails areshifted, and thereby arrest the rails exactly in position in which thenext following hole is to be drilled. All that the operator has todo,after once adjusting the combined vise and gage, is to press upon thehandle of lever Z after each successive hole is bored, to withdraw pint' from the outer rail and then shift the rails along the respectivegrooves a ct orb b', die., until the further motion is arrested by thepin t' dropping into the next following (or last-drilled) hole. Therails maybe secured in the grooves by clamps or other devices while thedrilling is being done. It is, however, not necessary, because the railsare fully inclosed in the grooves, and owing to their curvilinear shapethe very slight clearance between the rails and the walls of thegrooves, and also owing to the circumstance At the start of-the boringoperation the' that the two rails are clamped together and the outer oneis being held in thebloek by the pin t', cannot be displacedaccidentally.

Besides the advantages stated above the use of my combined gage and viseavoids all danger of bending the rails during the drilling and prevents'the forming of hurs around the holes.

l. A combined drilling-vise and gage comprising a block, series ofgrooves, representing segments of concentric circles, arranged in pairs,provided on the face of the block and series of radial bores runningtransversely through the strips bounding the grooves, and dividing theperipheries of the circles, represented by each pair of grooves in equalsections. j

2. A combined drilling-vise and gage comprising a fian ged base-plate,segmental strips secured to the base-plate and forming a series ofgrooves representing segments of concentric circles, arranged in pairs,means for securing the strips to the base-plate; vseries of radialbores, representing equal divisions of circles of various diameters,provided in the outer flange of the base-plate, and series of radialbores runnin gtransversely through the strips bounding the grooves anddividing the peripheries of the circles, represented by each pair ofgrooves in equal sections.

3. An automatic stopper comprising a bow, a bore in the apex of the bow,a stop-pin provided with a series of transversal holes, a crosspin setin one of the transversal holes beyond the bow movably set in the bore acollar adjustably secured to the pin within the bow, a spiral spring seton the pin between the collar and the apex. of the bow, a standard, a

IOO

IIO

two-armed lever fulcrumed in the standard and means for exiblyconnecting one end of the lever to the stop-pin.

4. The combination with a combined drilling-vise and gage comprising ablock, series of grooves, representing segments of concentric circles,arranged in pairs, provided on the face of the block and series ofradial bores running transversely through the strips bounding thegrooves and dividing the peripheries of the circles, represented by eachpair of grooves in equal sections, of an automatic stopping devicecomprising a bow, a bore in the apex of the bow, a stop-pin providedwith a series of transversal holes, a cross pin set in one of thetransversal holes beyond the bow inovably set in the bore, a collaradjustably secured to the pin within the bow, a spiral spring set on thepin between the collar and the apex of the bow, a standard, a two-armedlever fulcrumed in the standard, links pivotally connected to one end ofthe lever and to the stop-pin, and means for securing the bow and thestandard to the block.

In witness that I claim the improvements described in the foregoingspecification I have signed my name in the presence of two subscribingwitnesses.

CHRISTEN NIELSON. Witnesses:

HENRY SCHREITER, ROBERT VALENTINE MATHEws.

